Madler, planetary compression of Uranus, 96; distance of the innermost satellite of Saturn from the centre of that planet, 97; material contents of the Moon, 96; its libration, 98; mean depression of temperature on the three cold days of May (11th-13th), 133; conjecture that the average mass of the larger number of binary stars exceeds the mass of the Sun, 149.
Magellanic clouds, 85.
Magnetic attraction, 188; declination, 181-183; horary motion, 177-180; horary variations 183, 190; magnetic storms, 177, 179, 195, 199; their intimate connection with the Aurora, 193-201; represented by three systems of lines, see Lines; movement of oval systems, 182; magnetic equator, 183-185; magnetic poles, 183, 184; observatories, 190-192; magnetic stations, 190, 191, 317.
Magnetism, terrestrial, 177-193, 201; electro, 177-191.
Magnussen, Soemund, description of remarkable eruption in Iceland, 236.
Mahlmann, Wilhelm, south west direction of the aërial current in the middle latitudes of the temperate zone, 317.
Mairan on the zodiacal light, 138, 139, 142; his opinion that the Sun is a nebulous star, 141.
Malapert, annular mountain, 98.
Malle, Dureau de la, 223.
Man, general view of, 351-359; proofs of the flexibility of his nature, 27; results of his intellectual progress, 53, 54; geographical distribution of races, 351-356; on the assumption of superior and inferior races, 351-358; his gradual recognition of the bond of humanity, 358, 359.